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List of 9-letter words beginning with

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There are 18 nine-letter words beginning with OPE

OPENSIDESopensides n. Plural of openside.
open-sides n. Plural of open-side.
OPENSIDE n. a rugby player who plays on the open side of a scrum.
OPENWORKSopenworks n. Plural of openwork.
OPENWORK n. ornamental work with numerous openings.
OPERAGOERoperagoer n. Someone who attends an opera performance.
opera-goer n. Alternative form of operagoer.
OPERAGOER n. one who attends the opera.
OPERANTLYoperantly adv. In an operant manner.
OPERANT adv. operative.
OPERATICSoperatics n. Exaggerated or overly emotional behaviour; histrionics.
OPERATICS n. the study of opera; histrionic behaviour.
OPERATINGoperating adj. In operation; that operates.
operating adj. Involved in an operation. (Can we add an example for this sense?)
operating v. Present participle and gerund of operate.
OPERATIONoperation n. The method by which a device performs its function.
operation n. The method or practice by which actions are done.
operation n. The act or process of operating; agency; the exertion of power, physical, mechanical, or moral.
OPERATISEoperatise v. Alternative form of operatize.
OPERATISE v. to turn a play etc. into an opera, also OPERATIZE.
OPERATIVEoperative adj. Effectual or important.
operative adj. Functional, in working order.
operative adj. Having the power of acting; hence, exerting force, physical or moral; active in the production of effects.
OPERATIZEoperatize v. (Transitive) To convert into operatic form.
OPERATIZE v. to turn a play etc. into an opera, also OPERATISE.
OPERATORSoperators n. Plural of operator.
OPERATOR n. one who operates.
OPERCELESOPERCELE n. an anatomical part that serves as a lid or cover, also OPERCULE, OPERCULUM.
OPERCULARopercular adj. (Anatomy) relating to the operculum.
opercular n. (Anatomy) The principal opercular bone or operculum of fishes.
OPERCULAR adj. belonging to the operculum.
OPERCULESopercules n. Plural of opercule.
OPERCULE n. an anatomical part that serves as a lid or cover, also OPERCELE, OPERCULUM.
OPERCULUMoperculum n. (Zoology) A covering flap in animals, such as a gill cover.
operculum n. (Botany) The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal…
operculum n. (Dentistry) A gum flap covering (part of) a partially erupted tooth, usually a wisdom tooth.
OPERETTASoperettas n. Plural of operetta.
OPERETTA n. (Italian) a light musical drama with dialogue.
OPEROSELYoperosely adv. In an operose manner.
OPEROSE adv. involving great labour.
OPEROSITYoperosity n. Laboriousness.
OPEROSITY n. laboriousness.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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